Save Time by Automating Internal Overtime Recalculation

  • by Daniil Serebrennikov, Managing Partner, VTMSoft LLC
  • March 15, 2005
Internal recalculation can simplify the development of SAP Personnel Time Management (PT) business processes. It adds flexibility to such PT business functions as overtime, holidays, and regular hours processing. The author provides recommendations for implementing this functionality, discusses its limitations, and describes examples.
Key Concept
The internal recalculation functionality is based on the time-evaluation feature that internally initiates the retrocalculation process — time-evaluation results of previous dates based on the information available in future dates. SAP introduced this functionality with R/3 Release 4.6A as part of Personnel Time Management.

SAP’s internal recalculation functionality makes time evaluation more flexible, allowing you, for instance, to automate more business cases. It also simplifies audit and maintenance for HR/payroll support departments, which makes the lives of timekeepers easier. Eliminating their data-entry chores frees HR employees for more productive tasks such as data reconciliation or payroll results analysis.

Internal recalculation is useful in many business scenarios. Although it was developed for overtime analysis, you can use it in all cases where daily calculations are based on weekly (period) data. You can customize SAP-delivered schemas and personnel calculation rules for different business scenarios. Limitations include the ability to transfer only one time type to the past, performance in the case of multiple loops, and debugging using the time-evaluation log.

The time-evaluation process hinges on the assumption that all necessary data is available for the program prior to or on the day of processing. This means that all potential changes in HR master data are successfully stored in SAP; all absences, attendances, and substitutions are successfully posted to corresponding infotypes from the time-recording system (e.g., Cross-Application Time Sheet, or CATS); and the results from previous runs of time evaluation are consistent and available.

Daniil Serebrennikov

Daniil Serebrennikov is a managing partner of VTMSoft LLC (a consulting and development company founded in 2009 by several former SAP high-level professionals, consultants, and software developers). He has been working in SAP ERP HCM projects (Time, PA, OM, and Payroll) since 1998 focusing on complex global and customer-specific solutions, primarily in SAP Time Management. Daniil’s previous experience was with SAP AG, several large consulting companies, and clients in different industries: oil, entertainment, utilities, mining, and the public sector. He also frequently speaks at SAP HR conferences.

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